Answers

Add 12/4 and 81/60

1^st number: 3 0/4, 2^nd number: 1 21/60

12/4 + 81/60 is 87/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 60 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 4 × 15 = 60,
   12/4 = 12 × 15/4 × 15 = 180/60
3. Likewise, for the 2nd fraction, since 60 × 1 = 60,
   81/60 = 81 × 1/60 × 1 = 81/60
4. Add the two like fractions:
   180/60 + 81/60 = 180 + 81/60 = 261/60
5. 261/60 simplified gives 87/20
6. So, 12/4 + 81/60 = 87/20
   In mixed form: 47/20

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